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timofeeve [1]
3 years ago
7

Which of the following refers to fibrocystic breast disease?

Biology
1 answer:
klasskru [66]3 years ago
7 0

Answer:

The correct option is a. Fibrocystic breast disease refers to the progressive development of fluid-filled cysts and fibrous tissue.

Explanation:

Fibrocystic breast disease is characterized by benign (non-cancerous) changes in fibrous tissue. These changes may include irregular lumps or cysts (Breast cysts are sacs full of fluid inside the breast) which tend to mix with the surrounding fibrous tissue, breast swelling, nipple tenderness. Fibrocystic breasts are composed of tissue that can have a lumpy or rope-like texture. Which is called "nodular or glandular breast tissue" in it, there are observable characteristics of the disease through the microscope as: a prominence of fibrous tissue, excessive growth of the cells lining the breast ducts, enlargement of the mammary lobes and the fluid-filled cysts.

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The cytochrome c in both horses and pigeons differs from the human protein at 12 locations. Based on this data, you might infer
yuradex [85]

Answer:

Cytochrome c is an enzyme found in bacteria, fungi, plants and animals. Here it is given that the human amino acid sequence for cytochrome c differs at 12 locations from the sequence in horses and pigeons. This information might be useful for inferring in preliminary stages that horses and pigeons are closely related to each other since they both show similar amount of difference from humans.

However, this hypothesis is being made with respect to the the comparison between "humans and horses" and "humans and pigeons". To further test this hypothesis pigeons and horses should be directly compared to each other without the use of a third species like humans. Hence, the sequence for cytochrome c in horse and pigeon should be compared with each other rather than comparing to humans.

3 0
3 years ago
What determines the genotype of an organism?
Dominik [7]

Answer:

D. The alleles that are passed from parents to offspring.

Explanation:

<em>The alleles that are passed from parents to offspring are what determine the Genotype of an organism since alleles contain hereditary and genetic materials within them.</em>

8 0
3 years ago
What is homeostasis... Be discriptive
Semenov [28]
<span>(I got this from my handbook dictionary)
"the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes."

What that basically means is that homeostasis is the ability to respond to certain environments. It is how you respond to environmental changes and how you basically adapt to it.. that's where the idea of response and adaption came from.

Hope this Helps!! (I had a quiz on this once) 
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3 0
3 years ago
Which feature is common to gills, lungs, and tracheae?
fredd [130]
The art of breathing in someway.
4 0
3 years ago
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Explain the difference between selective breeding and genetic engineering in the development of food crops with desirable traits
Brums [2.3K]

Selective breeding is the traditional method for improving crops and livestock, such as increasing disease resistance or milk yield.

Genetic engineering is a faster way, which transplants genes for a desired characteristic into an organism. However, genetic engineering offers many potential benefits but carries the risk of unexpected harmful effects.

6 0
3 years ago
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